What boat are we talking about here? Have you designed and buildt your own boat, or heavily modified one?

Personally, I am pretty certain that rudder rake dont move CoLR much, but not everybody agree on that. I am of the opinion that raking the rudders more forward makes the part of the rudder forward of the pivot point act as a canard. I.e. the area in front of the pivot point works much like a servo in a car (lets not get into cars, after what happened in the other thread <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> ), aiding you when you change rudder angle while steering.